Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Intel - Core Ultra 5 225 | AMD - Ryzen 7 7800X3D |
|---|---|---|
| L3 cache | 20 MB | 96 MB |
| TDP | 65 W | 120 W |
| Cores | 10 | 8 |
| Boost clock | 4.9 GHz | 5.0 GHz |
| Cinebench R23 (multi) | 18200 | 18000 |
Between the Core Ultra 5 225 and Ryzen 7 7800X3D, the Core Ultra 5 225 comes out ahead in tdp / cores, while the Ryzen 7 7800X3D wins on l3 cache / boost clock. Overall, the Core Ultra 5 225 scores 47.8 and the Ryzen 7 7800X3D scores 49.8 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (47.8 vs 49.8). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Core Ultra 5 225 if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. The biggest gaps in its favor are tdp, cores, cinebench r23 (multi). The single most decisive one: TDP — 55.00 W less. 65 vs 120.
Pick the Ryzen 7 7800X3D if you care most about l3 cache / boost clock. Its strongest claims are l3 cache, boost clock. The single most decisive one: L3 cache — 380.00% more. 96 MB vs 20 MB.
There are no meaningful ties on the headline specs — every popular-comparison metric has a winner.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Intel - Core Ultra 5 225 or AMD - Ryzen 7 7800X3D?
AMD - Ryzen 7 7800X3D leads the current Mars Score by 2.0 points.The more useful decision is the trade-off behind that result: compare cores, boost clock, tdp against the way you will actually use the product.
Choose Intel - Core Ultra 5 225 if…
Intel - Core Ultra 5 225 has the measurable edge on tdp w, core count, cinebench r23 multi.
Choose AMD - Ryzen 7 7800X3D if…
AMD - Ryzen 7 7800X3D has the measurable edge on cache l3 mb, boost clock ghz.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Intel - Core Ultra 5 225 wins
- ▲TDP — 55.00 W less. 65 vs 120.
- ▲Cores — 25.00% more. 10 vs 8.
- ▲Cinebench R23 (multi) — 1.11% more. 18200 vs 18000.
Why AMD - Ryzen 7 7800X3D wins
- ▲L3 cache — 380.00% more. 96 MB vs 20 MB.
- ▲Boost clock — 2.04% more. 5.0 GHz vs 4.9 GHz.
Spec comparison
Cores
| Spec | Intel - Core Ultra 5 225 | AMD - Ryzen 7 7800X3D |
|---|---|---|
| Coresⓘ | 10lead | 8 |
| Threadsⓘ | 10 | 16lead |
| Base clockⓘ | 3.3 GHz | 4.2 GHzlead |
| Boost clockⓘ | 4.9 GHz | 5.0 GHzlead |
| L3 cacheⓘ | 20 MB | 96 MBlead |
Platform
| Spec | Intel - Core Ultra 5 225 | AMD - Ryzen 7 7800X3D |
|---|---|---|
| Socketⓘ | LGA1851 | AM5 |
| TDPⓘ | 65 Wlead | 120 W |
| Integrated graphicsⓘ | true | true |
| DDR5ⓘ | true | true |
Benchmarks
| Spec | Intel - Core Ultra 5 225 | AMD - Ryzen 7 7800X3D |
|---|---|---|
| Cinebench R23 (multi)ⓘ | 18200lead | 18000 |
| Cinebench R23 (single)ⓘ | 1980lead | 1880 |